如果我没记错的话，我假设你想让你的所有点在地图上以最高的缩放级别可见。我通过将地图的缩放级别初始化为16来实现这一点(不确定它是否是V3上可能的最高缩放级别)。

var map = new google.maps.Map(document.getElementById('map_canvas'), {
  zoom: 16,
  center: marker_point,
  mapTypeId: google.maps.MapTypeId.ROADMAP
});

然后我做了边界的事情:

var bounds = new google.maps.LatLngBounds();

// You can have a loop here of all you marker points
// Begin loop
bounds.extend(marker_point);
// End loop

map.fitBounds(bounds);

结果: 成功!

有同样的问题，需要适应地图上的许多标记。 这解决了我的问题:

申报范围 koderoid提供的使用方案(用于每个标记集bounds.extend(objLatLng)) 执行fitbounds后映射完成: google.maps.event。addListenerOnce(map， 'idle'， function() { 地图。fitBounds(边界); })；

我使用:

gmap.setZoom(24); //this looks a high enough zoom value
gmap.fitBounds(bounds); //now the fitBounds should make the zoom value only less

这将使用较小的24和必要的缩放级别根据你的代码，但它可能会改变缩放无论如何，并不关心你有多少缩小。

为了配合另一个解决方案-我发现“监听bounds_changed事件，然后设置新的缩放”方法对我来说并不可靠。我认为我有时在地图已经完全初始化之前调用fitBounds，初始化导致一个bounds_changed事件，将使用侦听器，在fitBounds改变边界和缩放级别之前。我最终得到了这段代码，到目前为止似乎还可以工作:

// If there's only one marker, or if the markers are all super close together,
// `fitBounds` can zoom in too far. We want to limit the maximum zoom it can
// use.
//
// `fitBounds` is asynchronous, so we need to wait until the bounds have
// changed before we know what the new zoom is, using an event handler.
//
// Sometimes this handler gets triggered by a different event, before
// `fitBounds` takes effect; that particularly seems to happen if the map
// hasn't been fully initialized yet. So we don't immediately remove the
// listener; instead, we wait until the 'idle' event, and remove it then.
//
// But 'idle' might happen before 'bounds_changed', so we can't set up the
// removal handler immediately. Set it up in the first event handler.

var removeListener = null;
var listener = google.maps.event.addListener(map, 'bounds_changed', () => {
  console.log(map.getZoom());
  if (map.getZoom() > 15) {
    map.setZoom(15);
  }

  if (!removeListener) {
    removeListener = google.maps.event.addListenerOnce(map, 'idle', () => {
      console.log('remove');
      google.maps.event.removeListener(listener);
    });
  }
});

我只是通过提前设置maxZoom来修复这个问题，然后在之后删除它。例如:

map.setOptions({ maxZoom: 15 });
map.fitBounds(bounds);
map.setOptions({ maxZoom: null });

对我来说，最简单的解决方法是:

map.fitBounds(bounds);

function set_zoom() {
    if(map.getZoom()) {map.setZoom(map.getZoom() - 1);}
    else {setTimeout(set_zoom, 5);}
}
setTimeout(set_zoom, 5);